He was known to have been hanging about and was not expected to pass the test. ______, his failure came as no wonder to his parents.

The second-hand car David bought the other day is as good as new; ______ it is in excellent condition.

The two international companies reached an agreement, which was based on their             talks.

Bows and arrows have _______ been out of use.　 

He speaks English well indeed, but of course not ______ a native speaker.